Skylight lifter and lock



(Nor/100161.)

1 W. TREBILCOCK.

' SKYLIGHT LIFTER AND LOCK.

No. 455,134. Patented June 30,1891.

BYM

)5" y ATTORNEYS UNITED STATES PATENT' OFFICE.

IVILLIAM TREBILCOCK, OF CENTRAL CITY, COLORADO.

SKYLIGHT LIFTER AND LOCK.

SPECIFICATION forming part of Letters Patent No. 455,134, dated J' une 30, 1891.

I Application led March 4, 1891. Serial No. 383,789. (No model.) I

To all whom t may concern.-

Be it known that l, WILLIAM TREBILCOCK, residing at Central City, in the county of Gilpin and State of Colorado, have invented certain new and useful Improvements in Skylight Lifters and Locks, of which the following is a specilication.

My invention has for its object to provide a simple, cheap, easily-operated, and effective combined skylight lifter and lock, which will serve to raise or lower the skylight for ventilating purposes and hold it locked in any of its adjusted positions, so that it cannot be raised or lowered from lthe outside.

My invention consists in the peculiar oombination and novel arrangement of the several parts hereinafter fully described in the annexed specification, and particularly pointed out in the claims, reference being hadto the accompanying drawings, in which- Figure lis a side View of my improvement. Fig. 2 is a sectional plan view; and Fig. 3 is an end view, partly in section.

In the accompanying drawings, A indicates a bracket or support, which is secured to the inside framing of the skylightas shown, the outer end of the horizontal member c thereof being apertured, as at a', in which the lifting and locking rod B is adapted to be slid up or down.

By reference to Fig. 3 of the drawings it will be observed that the lifting and locking rod B is formed with a series of inclined notches @which are arranged to automatically lock in engagement with a spring-actuated lock-bar C, pivoted at c on the member ct of the bracket, such notches being inclined in the manner shown, so as to admit of the bar being pushed upward past the bar C, but to lock against same on its downward pressure. To hold said bar B in its locked positions, I provide a spring-bar D, pivoted near its lower end, as at d, to the bar B, its upper end being extended to the rear of and up through the aperture d', the leaf-spring E serving to normally press said bar D against the wall a2 of the aperture and the bar B against the wall d3, as shown, said bar D being formed with a series of notches d2, inclined in a direction opposite to the notches b4 in bar B and disposed about three-eighths of an inch below the horizontal plane of the same, whereby said bar D will be locked from movement upward when adjusted in position, for apurpose presently described.

The lower end of the bar D is extended below the pivot d and rests against the long arm f of an angle-lever F, pivoted in the lower end of the bar B, its short arm f being connected to the cord G, by means of which the device is operated, the free Vend of said cord extending up over a pulley H and down again to within easy reach for operation.

The pulley H is mounted'upon a shaft I, journaled on the bracket A and disposed in a slotted standard J, through which the cord passes, and is held to the pulley, as shown. Upon the shaft I is mounted to revolve therewith a disk K, the peripheral edge of which is formed with a series of notches 7c, having inclined faces k', which edge is adapted to engage and pass over a spring-arm L on the lock-bar Cr when-the bar B is operated to raise the skylight; but to engage said arm L and pull it outward to release the-bar C from the toothed bar B when it is operated to lower the skylight, the arrangement of the notches in the disk K and the arm L being such as to allow the disk to slip over such arm when the disk is turned in the direction indicated by the arrow and to engage said arm L, as stated, when turned in an opposite direction.

The manner in which my improved conibined lifter and lock is operated is very simple. The operator, to raise the skylight, pulls upon the free end of the cord G, which causes the lever F to force the spring-bar D inward out of engagement with the edge d2 of the aperture a and allows it and the barB to be pushed up one or more notches. Then by releasing the cord the bar B will seat itself into engagement with the locking-arm C and be prevented from falling down, and the bar D swinging outward will lock against the edge d2, as shown, thereby preventing any one from raising or lowering the skylight from the outside. Whenit is desired to lower the skylight, the operator takes hold of the free end of the cord, pulling slightly, which releases lock-bar D. Then continuing the pull, lifting the skylight until the disk K revolves enough for spring-arm L to catch in first notch of disk K, which by slight reverse movement causes the arm C to be pulled away and become dis- IOO engaged from the bar B. He then gradually allows the bars B and D to drop one or more notches, as he may desire, then by slight pull on the cord, which revolves disk K, thereby diseonnectin g the spring-arm L,when the bars B and D will automatically lock themselves in place.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. A lifter for skyligl1ts,transoms, &c.,eon sisting of an apertured bracket, a notched lifting-bar connected to the skylight and arn ranged for lateral movement in the aperture in the bracket, a locking-lever for engaging said notched lifting-bar to hold it from doWnward movement, a spring-actuated lockingbar pivoted to the lower end of the lifting bar and projected through the aperture in the bracket, said spring-bar formed with notches arranged to engage the bracket and hold the lifting-barfrom upward movement, and means for raising the lifting-bar and unlocking` the locking-lever from said lifting-bar, substantially as and for the purpose described.

2. The combination, with the bracket A, having an aperture a', as shown, and the guide pulley Il, mounted thereon, of the notched lifting-bar B, the spring-actuated locking-arm C, adapted to engage the notched bar B, the spring-bar D, arranged to operate in the aperture a and hold the bar B in engagment with the arm C, and the lifting-cord G, secured to the lower end of the bar B, passed over the pulley H and down to Within easy reach of an operator, substantially as and for the purpose described.

3. The eombinatio11,with the bracket A, formed with an aperture a, the shaft I, mounted thereon, provided with a pulley Il and notched disk K, and the spring locking-arm C, having a spring member L, arranged for engagement with the notched disk, ofthe bars B and D, operating in the aperture a, and notched, as shown, the bar D, pivoted near its lower end to the bar B, the angle-le ver pivoted in the bar B and arranged to engage the barD, the operating-cord G, secured at one end to the lever F, its free end passed over the pulley H and extended down, as shown, all arranged substantially as and for the purpose described.

WT ILLIAM TRE BlLCO C K.

Witnesses:

VILLIAM WILLIAMs, NICHOLAS SPARGo. 

